Roughly 10.4 million mortgages, or one in five outstanding home loans in the U.S., will likely default if Congress refuses to implement new policy changes to prevent and sell more foreclosures, according to analyst Laurie Goodman from Amherst Securities Group.

At the end of the second quarter, more than 2.7 million long-delinquent loans, others in foreclosure and REO properties sat in the shadow inventory, more than double what it was in the first quarter of 2010 (Click to expand the chart below). With the market averaging roughly 90,000 loan liquidations per month, it would take 32 months, nearly three years, to move through the overhang.

And that number is contingent on no other loans going into default.

“Many analysts looking at the housing problem mistakenly assume it is limited to loans that are currently non-performing (or 60-plus days past due). Such borrowers have a high probability of eventually losing their homes. However, the problem also includes loans with a compromised pay history; these are re-defaulting at a rapid rate,” Goodman told a Senate subcommittee Tuesday.

Under a reasonable estimate, which is calculated with more conservative market conditions than what is currently being experienced, Goodman found nearly 2 million re-performing mortgages would default again and another 3.6 million already troubled loans to default as well.

The rest of the 10.4 million estimate is made of always-performing loans at various stages of negative equity. Of the 2.5 million always-performing mortgages with loan-to-value ratios above 120%, nearly half will default. Even 5% of the always-performing mortgages that have some equity left will default, as well, Goodman said.

In August, the Obama administration asked the housing industry for ideas on how to more efficiently sell or unload this overhang, and the Senate heard testimony from various housing players Tuesday. Each, including Goodman, said the government should target private investors.

Robert Nielsen, chairman of the National Association of Homebuilders, said government programs should be revamped to assist small and local businesses in rehabbing and unloading these properties.

Nielsen said Fannie, Freddie and the FHA should avoid bulk sales to large investors that have no stake in the neighborhoods in which these properties are located.

“Local and small businesses that have a stake in the future of the affected communities should be the driving force behind the disposition of the REO inventory. This will result in the creation of jobs and the stabilization of neighborhoods,” Nielsen said.

NAHB also urged Congress to extend the current conforming loan limits for Fannie Mae, Freddie Mac and the FHA, which are due to be lowered on Oct. 1.

Stan Humphries, chief economist for Zillow, said the rental market is currently booming and would be able to handle a mass conversion of foreclosures into rentals by investors, but the government, he said, would be wrong in upsetting this dynamic.

“Investors smell a distinct opportunity in this situation: The chance to buy an asset cheaply and rent it out dearly. In fact, close to one-third of the purchases of existing homes this year have gone to all-cash buyers, the bulk of whom are real estate investors,” Humphries said. “Any plan that may upset this balance – such as Fannie and Freddie getting into the rental market and creating competition – will have a chilling effect on private investment in the one segment of the housing market that is performing well.”

But with a Congress currently gridlocked on nearly every issue, none of the panelists so clearly described the looming housing problem and the consequences of continued inaction like Goodman.

“To solve the housing crisis you must create 4.1 million to 6.2 million units of housing demand over the next six years,” she said.

In the Tri-Lakes market, our foreclosures have slowly been increasing. On our website (Cooperappraisal.net) we are keeping a running tally to keep an eye on just exactly how many foreclosures we have for sale in our Mls system. With 149 REO properties still “active” and only 134 a month ago, we can see the rise right here at home.

The declining values and overall poor condition of the real estate market will not stop its slide until a majority of these foreclosures are “flushed” away. When there are less than 50 foreclosed properties available, it is our opinion that the slide will stop and the declines will stabilize.